For more than 300 years, the state system created by the Treaty of Westphalia in 1648AD determined relations among states and their peoples. In the 21st Century, such is no longer the case, with the form of the nation-state weakening and once all-powerful governments having to share their dominion with Trans National Corporations (TNCs) and Non Government Organizations (NGOs). Overall, 51 of the largest 100 economies in the world are corporations. The 300 largest corporations account for one quarter of the world's productive assets.